74 Annals of the Carnegie Museum. 



tions, the Comstock-Needham name of a vein is often followed by the 

 Selysian name in parentheses, especially in the first part of the paper. 

 Finishing this manuscript on the eve of departure for Central 

 America, it is a pleasure, as well as a duty, to acknowledge the kind- 

 ness of Dr. Holland in undertaking the burden of proof-reading, which 

 distance renders impracticable for the author. 



The principal collections on which the paper is based are : 



i. Collections made in the northwestern corner of the Department 

 of Magdalena, Colombia, adjoining Santa Marta, by Mr. and Mrs. 

 Herbert H. Smith, between March, 1898, and September, 1901. 



Mr. Smith has given a description of this district of Santa Marta, with 

 notes on the localities, in the Bulletins of the American Museum of 

 Natural History, vol. xx, pp. 408-414, 1904. From these notes we 

 extract the following having relation to the Odonata : 



" Bonda: Village on the river Manzanares, seven miles east of 

 Santa Marta. This was our headquarters during the greater part of 

 our stay in Colombia. The village itself is only 150 feet above sea- 

 level, but most collections were made in somewhat higher land. The 

 country is hilly, covered in great part with dry forest with intervals of 

 open grass land on the ridges. A thin line of mountain forest adjoins 

 the river. 



" Cacagualito : Plantation, twenty miles east of Santa Marta, 1,500 

 feet ; vegetation principally mountain forest, which here extends to a 

 lower level. Jordan is a plantation two miles further east, in a valley, 

 at 1,000 feet. 



" Cienega, or La Cienega : Town on the coast adjoining the great 

 lagoon of the same name ; the lagoon belongs to the estuary system of 

 the Magdalena. The country around is flat, swampy in places, and 

 with salt plains ; two or three miles back are dry hills with a scrubby 

 growth (dry-forest vegetation). Rio Frio is a town a few miles south 

 of Cienega, on a river of the same name ; Gaira, on the Gaira River, 

 is between Cienega and Santa Marta, on low land. These towns are 

 connected by a railroad. 



"Don A?no : Plantation, eighteen miles east of Santa Marta, in a 

 mountain valley, at 1,500 feet ; large clearings in mountain forest, with 

 adjoining dry forest and open lands. Don Amo Viejo is a locality 

 near it. 



